Grump CriticComedyGrump CriticComedythumb_upthumb_downGrump CriticJanuary 2, 1979"Leo asks Grump to give him a signal if his speech gets boring." (Muppet Wiki)US Last Updated: November 11, 2025 Request Update CastJim HensonLeoFrank OzGrumpJon StoneAnnouncer (voice)
